Koehler Bright Star 2D Worksafe 1 flashlight 2117 runs on 2 D-cell batteries. Safety rated for Division 1 hazardous locations. Safety Orange color. Explosion proof with crush resistant housing and circuit breaker mechanism. Slide switch. Made in the USA with a limited lifetime warranty from Bright Star. Worksafe 1 series flashlights have been designed specifically for use in Division 1 hazardous locations. A Division 1 hazardous location is one where ignitable concentrations of flammable gases, vapors or liquids can exist all of the time or some of the time under normal operating conditions. Each flashlight has been individually tested and certified for use in various Division 1 locations.